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nounany of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
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Definition that contains hadrosaur
- euronithopoda widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
- ornithopoda widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
- suborder euronithopoda widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
- euronithopod widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
- suborder ornithopoda widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)